P0A21 Possible Causes
- Faulty motor torque sensor
- Motor torque sensor harness is open or shorted
- Poor electrical connection in the motor torque sensor circuit
What Does It Mean?
How to Fix Code P0A21
Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
P0A21 Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P0A21 Meaning
The engine control module (ECM) monitors the motor torque sensor. The ECM sets the OBDII code when the motor torque sensor does not meet factory specifications.